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- 06530300 — Nylock Lock Nut .625-18 (Genuine OEM Ariens / Gravely Part)
Description
06530300 — Nylock Lock Nut .625-18 (Genuine OEM Ariens / Gravely Part)
The 06530300 Nylock lock nut is a genuine OEM Ariens / Gravely fastener designed to provide secure, vibration-resistant retention in critical mower assemblies. Featuring a .625-18 thread size with an integrated nylon locking insert, this nut is engineered to maintain clamp load under constant vibration and load typical of commercial mowing and utility equipment.
Manufactured to Ariens and Gravely factory specifications, the 06530300 lock nut ensures proper fitment, dependable holding strength, and long service life in spindle, steering, deck, and drive-related applications.
Key Details
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Manufacturer Part Number: 06530300
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Part Name: Lock Nut (Nylock)
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Brand: Ariens / Gravely
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Thread Size: .625-18
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Locking Type: Nylon insert (Nylock)
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Finish: YWZC (yellow zinc coated)
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Part Type: Self-locking hex nut
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Function: Prevents loosening from vibration
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Installation: Direct OEM replacement
Applications
The Ariens / Gravely 06530300 lock nut is commonly used in mower spindles, steering systems, deck assemblies, and wheel components, where reliable fastener retention is critical for safe operation.
Compatibility
This OEM lock nut is used across Ariens and Gravely equipment, including:
Ariens Equipment
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Sulky Pro Series – Sulky attachment
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ZT1742 / ZT1842 / ZT1842 – 42" mower spindle assemblies
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ZT1740 – 40" mower deck, belts, and blades
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PB 936 Snow Brush – Engine and belt drive systems
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GLT 440 / GLT 448 – 40" and 48" mower deck and spindle assemblies
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GT 600 – Steering hydraulic system
Gravely Commercial Models
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PM310 – Steering and rear wheel assemblies
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PM320 – Steering and rear wheel assemblies
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Pro-Master 320 – Steering and rear wheel assemblies
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Pro-Master 3084 – Steering and rear wheel assemblies
This part appears across multiple serial number ranges, supporting both early and later production models.
Why Use Genuine OEM 06530300
Using the OEM Ariens / Gravely 06530300 Nylock nut ensures:
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Proper thread engagement and torque retention
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Resistance to loosening from vibration
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Secure spindle, steering, and wheel connections
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Long-lasting performance in commercial and residential use
This lock nut provides OEM-level safety, durability, and fit, making it the correct replacement choice for Ariens and Gravely mower and utility equipment.
